javascript - Textbox to accept only one @ -

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i'm creating email field in html, can accept 1 @?

for example email:

chong!#$@gmail.com - should invalid because of there others special characters included

or

ch@ng@gmail.com - should invalid because there 2 @'s.

the accepted special character should 1 @, how do in javascript/jquery? sorry don't know in regex. or there way validate email format?

you can use following regex in input:

 <input type="email" pattern="[a-za-z0-9.]+\@[a-za-z0-9.]+\.[a-za-z]+" />

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